radical reaction mechanism. Particularly, TBPB was used not only as an efficient oxidant, but also as a green methyl source in such transformation. Moreover, this method could also be efficiently extended to the alkylation of quinones. This reaction tolerated a series of functional groups and prepared a series of derivatives of vitamin K3 and benzoquinone. Notably, antimalarial parvaquone was synthesized
通过自由基反应机理,在过氧苯
甲酸叔丁酯(
TBPB)存在下,
铋催化了醌的甲基化。特别地,在这种转化中,
TBPB不仅用作有效的氧化剂,而且还用作绿色甲基源。而且,该方法也可以有效地扩展到醌的烷基化。该反应耐受一系列官能团,并制备了一系列
维生素K 3和苯醌的衍
生物。值得注意的是,通过该反应合成了抗疟原虫苯醌。